Downspout side elbow coupling



FIG. 1 is a perspective view of downspout side elbow coupling showing my design;

FIG. 2 is a right side elevation view thereof, the left side elevation view thereof being a mirror image;

FIG. 3 is a rear elevation view thereof;

FIG. 4 is a front elevation view thereof;

FIG. 5 is a top plan view thereof; and,

FIG. 6 is a bottom plan view thereof. 

The ornamental design for a downspout side elbow coupling, as shown and described. 